US2867671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of saturated aromatic hydrocarbon to a cycloolefin in the presence of free bromine
Assignee: Shell Development Co
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Filing: 1956-07-30
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Granted: 1959-01-06
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Richard D Mullincaux
- 👤 John H Raley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:23
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/44; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR THE DEHYDROGENATION OF A SATURATED HYDROAROMATIC HYDROCARBON TO A CORRESPONDING CYCLOOLEFIN WHICH COMPRISES SUBJECTING A MIXTURE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SATURATED MONOCYCLIC HYDROAROMATIC HYDROCARBONS, DECALIN AND TETRALIN AND FROM 0.1 TO ABOUT 1 MOLE OF FREE BROMINE PER MOLE OF FEED HYDROCARBON IN VAPOR PHASE TO A TEMPERATURE OF AT LEAST ABOUT 400* C. FOR A SHORT TIME TO PRODUCE A TOTAL REACTION PRODUCT IN WHICH THE CONTENT OF HYDROAROMATIC OLEFIN IS VERY HIGH WHILE THE AMOUNT OF AROMATIC PRODUCT IS RELATIVELY LOW AND RECOVERING CYCLOOLEFIN FROM SAID PRODUCT.
Claim 2
Dependent Claim
97 words
A PROCESS FOR THE DEHYDROGENATION OF A SATURATED HYDROAROMATIC HYDROCARBON TO A CORRESPONDING CYCLOOLEFIN WHICH COMPRISES SUBJECTING A MIXTURE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SATURATED MONOCYCLIC HYDROAROMATIC HYDROCARBONS, DECALIN AND TETRALIN AND FROM 0.1 TO ABOUT 1 MOLE OF FREE BROMINE PER MOLE OF FEED HYDROCARBON IN VAPOR PHASE TO A TEMPERATURE OF AT LEAST ABOUT 400* C. FOR A SHORT TIME TO PRODUCE A TOTAL REACTION PRODUCT IN WHICH THE CONTENT OF HYDROAROMATIC OLEFIN IS VERY HIGH WHILE THE AMOUNT OF AROMATIC PRODUCT IS RELATIVELY LOW AND RECOVERING CYCLOOLEFIN FROM SAID PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |